Controller advice? (Home-studio/preparation vs club)

TL;DR – Will preparing/practicing on cheap beginner Rekordbox controllers translate well to performing on professional systems? Which one(s)?

I'm not a beginner, but unfamiliar with Pioneer / AlphaTheta. I need the option to bring just USBs to venues, and want to feel familiar and comfortable behind those spaceship panels. (i.e. rather than plugging in my own gear with no sound check in a crowded venue and no sound guy in sight since hours ago)

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What are your experiences with home controllers to prepare + practice on, bringing just USBs to most venues? Does a dirt cheap controller like DDJ-200 work for that? Or rather a step up to FLX2/4?

FLX10 – uuggh, lights hurt my eyes even in the photos.

Maybe the GRV6? That one seems more club-like to me. And...that on-the-fly stems-separation does sound interesting, but does it work well enough? (and is it that different from FLX apart from stems?)

A totally different option could maybe be the XP2? Contradicting myself a bit – I guess I'd have to bring it + laptop to make use of all those pads... But the important thing is will it be plug and play? (I like the setup w/o jog-wheels, and pads similar to Ableton Push 2 or Maschine could be really useful. Barring flashy lights).

Or other manufacturers? Smth super small like Reloop Neon (but for Rekordbox)?

It's a jungle out there... pls halp! Cheers!